Returns true if num is less than zero, else false
user=> (neg? -1) true user=> (neg? 0) false user=> (neg? 1) false
user=> (neg? -0.1) true user=> (neg? 0.1) false
user=> (neg? 1/2) ;; false user=> (neg? -1/2) ;; true user=> (neg? {}) ;; Execution error (ClassCastException) at user/eval3801 (REPL:1). ;; clojure.lang.PersistentArrayMap cannot be cast to java.lang.Number
Returns true if num is greater than zero, else false
Returns true if num is zero, else false
neg?
